@article{271cf3e89d214f38af3819e2beb1b0f3,
title = "Spin-Polarized Photocatalytic CO2Reduction of Mn-Doped Perovskite Nanoplates",
abstract = "{"}Spin{"}has been recently reported as an important degree of electronic freedom to improve the performance of electrocatalysts and photocatalysts. This work demonstrates the manipulations of spin-polarized electrons in CsPbBr3 halide perovskite nanoplates (NPLs) to boost the photocatalytic CO2 reduction reaction (CO2RR) efficiencies by doping manganese cations (Mn2+) and applying an external magnetic field. Mn-doped CsPbBr3 (Mn-CsPbBr3) NPLs exhibit an outstanding photocatalytic CO2RR compared to pristine CsPbBr3 NPLs due to creating spin-polarized electrons after Mn doping. Notably, the photocatalytic CO2RR of Mn-CsPbBr3 NPLs is significantly enhanced by applying an external magnetic field. Mn-CsPbBr3 NPLs exhibit 5.7 times improved performance of photocatalytic CO2RR under a magnetic field of 300 mT with a permanent magnet compared to pristine CsPbBr3 NPLs. The corresponding mechanism is systematically investigated by magnetic circular dichroism spectroscopy, ultrafast transient absorption spectroscopy, and density functional theory simulation. The origin of enhanced photocatalytic CO2RR efficiencies of Mn-CsPbBr3 NPLs is due to the increased number of spin-polarized photoexcited carriers by synergistic doping of the magnetic elements and applying a magnetic field, resulting in prolonged carrier lifetime and suppressed charge recombination. Our result shows that manipulating spin-polarized electrons in photocatalytic semiconductors provides an effective strategy to boost photocatalytic CO2RR efficiencies.",
author = "Lin, {Cheng Chieh} and Liu, {Ting Ran} and Lin, {Sin Rong} and Boopathi, {Karunakara Moorthy} and Chiang, {Chun Hao} and Tzeng, {Wen Yen} and Chien, {Wan Hsiu Chang} and Hsu, {Hua Shu} and Luo, {Chih Wei} and Tsai, {Hui Ying} and Chen, {Hsin An} and Kuo, {Pai Chia} and Jessie Shiue and Chiou, {Jau Wern} and Pong, {Way Faung} and Chen, {Chia Chun} and Chen, {Chun Wei}",
note = "Funding Information: C.-W.C. acknowledges the financial support from the Ministry of Science and Technology (MOST), Taiwan (Grant No. 108-2923-M-002-002-MY2, MOST-NIMS add-on project), and the Taiwan Consortium of Emergent Crystalline Materials (TCECM). C.-C.C. acknowledges the financial support from the Ministry of Science and Technology (MOST), Taiwan (Project Nos. 108-2119-M-003-001 and 109-2113-M-003-011-MY3). In addition, financial support by the Center of Atomic Initiative for New Materials (AI-MAT), National Taiwan University, from the Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education in Taiwan (108L9008) is acknowledged. The XANES spectra obtained from Taiwan Photon Source (TPS) 45A2 beamline at the National Synchrotron Radiation Research Center (NSRRC) are appreciated. In addition, technical support from the Advanced Materials Characterization lab at Academia Sinica is acknowledged. Funding Information: C.-W.C. acknowledges the financial support from the Ministry of Science and Technology (MOST), Taiwan (Grant No. 108-2923-M-002-002-MY2 MOST-NIMS add-on project), and the Taiwan Consortium of Emergent Crystalline Materials (TCECM). C.-C.C. acknowledges the financial support from the Ministry of Science and Technology (MOST), Taiwan (Project Nos. 108-2119-M-003-001 and 109-2113-M-003-011-MY3). In addition, financial support by the Center of Atomic Initiative for New Materials (AI-MAT) National Taiwan University, from the Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education in Taiwan (108L9008) is acknowledged. The XANES spectra obtained from Taiwan Photon Source (TPS) 45A2 beamline at the National Synchrotron Radiation Research Center (NSRRC) are appreciated. In addition, technical support from the Advanced Materials Characterization lab at Academia Sinica is acknowledged. Publisher Copyright: {\textcopyright} 2022 American Chemical Society.",
year = "2022",
month = aug,
day = "31",
doi = "10.1021/jacs.2c06060",
language = "English",
volume = "144",
pages = "15718--15726",
journal = "Journal of the American Chemical Society",
issn = "0002-7863",
publisher = "American Chemical Society",
number = "34",
}